JP2020148280A - Imposition structure of pair member - Google Patents

Abstract

To provide an imposition structure of pair members which can balance control of release of installation not to intend after engagement and downsizing of the imposition structure.SOLUTION: In an imposition structure of pair members 30, one of the members 10 comprises: a cantilever-like extension piece 12; a locking part 14 provided to the extension piece 12; and a holding part 13 provided to at least one side out of the extension piece 12 at fixed end side of the extension piece 12 with respect to the locking part 14. Another of the members 20 comprises: inserted parts 24 and 25 where the extension piece 12 is inserted in; and locked part 26 that the locking part 14 is locked. When the extension piece 12 is inserted in the inserted parts 24 and 25, the locking part 14 is locked to the locked part 26 with the state that the holding part 13 is inserted between the internal surface of the inserted part 25 and kept in bending direction of the extension piece 12.SELECTED DRAWING: Figure 3

Description

The present invention relates to an assembly structure for assembling a pair of members to each other.

Conventionally, various assembling structures for assembling a pair of members to each other have been proposed. For example, in one of the conventional assembly structures, a hook-shaped locking portion is provided at the tip of a cantilever-shaped locking arm extending from one member toward the other member, and the hook-shaped locking portion is provided. Is hooked on a predetermined locked portion of the other member so that the pair of members can be assembled to each other (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2012-225857

In the conventional assembly structure described above, the locking arm extending from one member is elastically flexed, and the locking portion of the locking arm is hooked on the locked portion of the other member. In this type of assembly structure, unintentional bending of the locking arm may be restricted after assembly in order to prevent the locking portion from being unintentionally disengaged from the locked portion. For example, the locking arm is provided with a rib-shaped protrusion protruding in the bending direction, and the other member is provided with a through hole, and the locking portion is locked while the protrusion of the locking arm is press-fitted into the through hole. By hooking on the locking arm, unintended bending of the locking arm may be regulated by a through hole.

However, in the above case, by providing the locking arm with a rib-shaped protrusion, the cross-sectional coefficient of the locking arm is increased and the locking arm is less likely to bend. Therefore, in order to secure the amount of bending for hooking the locking portion of the locking arm to the locked portion of the other member, the locking arm usually needs to have a considerable length. In other words, when the deflection of the locking arm is regulated by the through hole as described above, if a protrusion is provided on the locking arm in order to suppress unintended release of the assembly after assembling the pair of members, the locking arm It becomes difficult to shorten the size, and the assembly structure tends to become large as a whole.

The present invention has been made in view of the above circumstances, and an object of the present invention is to suppress unintentional release of assembly after assembly of a pair of members and to reduce the size of the assembly structure. It is to provide an assembly structure of the members of the above.

In order to achieve the above-mentioned object, the assembly structure of the pair of members according to the present invention is characterized by the following [1] to [4].
[1]
It is an assembly structure for assembling a pair of members to each other.
One member of the pair of the members
A cantilever-shaped extension piece, a locking portion provided on the extension piece, and a fixed end side of the extension piece with respect to the locking portion provided on at least one side edge of the extension piece. Has a holding part, which is
The other member of the pair of the members
It has an inserted portion into which the extension piece is inserted and a locked portion into which the locking portion is locked.
The assembly structure is
When the extending piece is inserted into the inserted portion, the locking portion is held in a state where the holding portion is sandwiched and held by the inner wall surface of the inserted portion in the bending direction of the extended piece. It is configured to be locked to the locked portion.
It has an assembly structure of a pair of members.
[2]
In the assembly structure described in [1] above,
The inserted portion is
The distance between the inner wall surfaces in the bending direction at the portion where the holding portion is sandwiched and held is narrower than the distance between the inner wall surfaces in the bending direction at a location different from the said location.
It has an assembly structure of a pair of members.
[3]
In the assembly structure according to the above [1] or the above [2],
The thickness of the holding portion in the bending direction is equal to or less than the thickness of the extending piece in the bending direction.
It has an assembly structure of a pair of members.
[4]
In the assembly structure according to any one of the above [1] to [3].
The holding part is
Press-fitted between the inner wall surfaces of the inserted portion,
It has an assembly structure of a pair of members.

According to the assembly structure having the configuration of [1] above, the holding portion provided on the side edge of the extending piece is sandwiched and held by the inner wall surface of the inserted portion in the bending direction of the extending piece. A pair of members are assembled together. Therefore, it is possible to prevent the extension piece from being displaced in the bending direction, and as a result, it is possible to prevent the locking portion of one member from being unintentionally disengaged from the locked portion of the other member. Further, since the holding portion is provided on the side edge of the extending piece, the size of the extending piece in the bending direction is smaller than that in the case where the rib-shaped protrusion protruding in the bending direction is provided on the extending piece as described above. It can be made thinner (thinner). Further, since the cross-sectional coefficient of the extension piece is unlikely to increase as compared with the case where the rib-shaped protrusion described above is provided, the extension piece can be shortened while ensuring a sufficient amount of bending of the extension piece. Therefore, the assembling structure of this configuration can both suppress the unintended release of the assembling after the engagement of the pair of members and reduce the size of the assembling structure. The bending direction of the extension piece is usually substantially the same as the thickness direction of the extension piece.

According to the assembly structure having the configuration of the above [2], while suppressing the positional deviation of the extending piece in the bending direction at the portion sandwiching the holding portion in the inserted portion, the extending piece extends to other portions in the inserted portion. It is possible to provide a gap between the piece and the inserted portion. As a result, it is possible to allow the extension piece to bend during assembly by utilizing the gap, and the assembly of the pair of members becomes easier.

According to the assembly structure of the above [3], since the thickness of the holding portion is equal to or less than the thickness of the extending piece, an increase in the cross-sectional coefficient of the extending piece due to the provision of the holding portion can be further suppressed.

According to the assembly structure of the above [4], the holding portion is press-fitted into the inserted portion, so that the positional deviation of the extension piece in the bending direction is more strongly suppressed as compared with the case where the holding portion is not press-fitted in that way. Unintentional release of assembly can be suppressed even more strongly.

As described above, according to the present invention, it is possible to provide an assembling structure of a pair of members that can both suppress unintentional disassembly after engagement of the pair of members and reduce the size of the assembling structure. ..

The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments for carrying out the invention described below (hereinafter, referred to as "embodiments") with reference to the accompanying drawings. ..

FIG. 1 is a perspective view of a resin component assembly including an assembly structure according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the resin component assembly shown in FIG. FIG. 3 is a perspective view (partial cross-sectional view) of the pair of members cut out from the portion A of FIG. 2, and FIG. 3 (a) shows a state before the pair of members are engaged, and FIG. 3 (b). ) Indicates an assembly structure according to an embodiment of the present invention obtained by engaging a pair of members. 4 (a) is a sectional view taken along the line BB of FIG. 3 (b), and FIG. 4 (b) is a sectional view taken along the line CC of FIG. 3 (b). FIG. 5 is a perspective view of one member according to the modified example.

<Embodiment>
Hereinafter, the assembly structure 30 according to the embodiment of the present invention shown in FIG. 3B will be described with reference to the drawings. The assembly structure 30 is typically applied to the resin component assembly 1 shown in FIG. The resin component assembly 1 is a component for accommodating meters arranged on an instrument panel of a vehicle, and is composed of a pair of arcuate portions 1a and a connecting portion 1b connecting them.

As shown in FIG. 2, the resin component assembly 1 made of resin is formed on a base portion 2, a frame-shaped standing wall portion 3 laminated and fixed on the upper surface of the outer edge portion of the base portion 2, and an upper end surface of the standing wall portion 3. It is composed of a frame-shaped decorative portion 4 that is laminated and fixed. In the example shown in FIG. 2, the present invention is carried out at a plurality of locations in the circumferential direction (three locations in FIG. 2) at the connecting portions of the standing wall portion 3 and the decorative portion 4 corresponding to the connecting portion 1b of the resin component assembly 1. The assembly structure 30 according to the form is applied respectively.

Hereinafter, the assembly structure 30 will be described with reference to FIG. 3 in which the part A of FIG. 2 corresponding to one of the plurality of locations to which the assembly structure 30 is applied is cut out and shown. As shown in FIG. 3, the assembly structure 30 is for engaging one resin member 10 corresponding to the decorative portion 4 and the other resin member 20 corresponding to the standing wall portion 3 with each other. It is a structure. Hereinafter, for convenience of explanation, as shown in FIG. 3, "deflection direction", "width direction", "vertical direction", "one side", "other side", "upper" and "lower" are defined. The "deflection direction", "width direction" and "vertical direction" are orthogonal to each other. In this example, the bending direction is substantially the same as the "thickness direction" of the extension piece 12.

As shown in FIG. 3A, one member 10 has a base portion 11 extending in the width direction. On the lower end surface of the base portion 11, a flat plate-shaped extending piece 12 extending downward and extending in the width direction is integrally formed. Further, a pair of holding portions 13 projecting downward are integrally formed on the lower end surface of the base portion 11 so as to be adjacent to both side edges in the width direction of the root portion of the extending piece 12. The protruding height of the pair of holding portions 13 from the lower end surface of the base portion 11 is smaller than the extending height of the extending piece 12 from the lower end surface of the base portion 11.

A locking hole 14 penetrating in the bending direction is formed at a position of the extending piece 12 below the holding portion 13. When the pair of members 10 and 20 are engaged, the locking hole 14 is locked to the locking projection 26 (described later) of the other member 20 which will be described later.

The other member 20 has a flat plate portion 21 extending in the width direction and the vertical direction. At the upper end of the flat plate portion 21, a flat plate-shaped upper plate portion 22 extending in the bending direction and extending in the width direction is integrally formed. A through hole 23 that penetrates in the vertical direction and extends in the width direction is formed at a position on the upper plate portion 22 on one side of the flat plate portion 21 in the width direction.

When the pair of members 10 and 20 are engaged, the extension piece 12 is inserted into the center portion 24 in the width direction of the through hole 23, and the pair of holdings is inserted into the pair of both end portions 25 in the width direction of the through hole 23. The portion 13 is inserted (press-fitted). The bending direction dimension of the central portion 24 in the width direction is larger than the bending direction dimension of both end portions 25 in the width direction. The bending direction dimension of the central portion 24 in the width direction is larger than the bending direction dimension of the extension piece 12. The bending direction dimension of both end portions 25 in the width direction is slightly smaller than the bending direction dimension of the holding portion 13. Therefore, when the pair of members 10 and 20 are engaged, the pair of holding portions 13 are press-fitted into the pair of both end portions 25 in the width direction (see FIG. 4A), and the extension piece 12 and the center portion 24 in the width direction are joined. A gap S will be formed between them (see FIG. 4B).

On one side surface of the flat plate portion 21 in the bending direction, a locking projection 26 protruding in one side in the bending direction is integrally formed below the upper plate portion 22 and at the center position in the width direction of the through hole 23. The configuration of the pair of members 10 and 20 has been described above.

In order to engage the pair of members 10.20, as shown by the white arrow in FIG. 3A, one member 10 is brought close to the other member 20 from above, and the extension piece 12 is made a through hole. It is inserted into the central portion 24 in the width direction of 23. When the insertion progresses and the tip of the extending piece 12 comes into contact with the locking projection 26, thereafter, the extending piece 12 bends to one side in the bending direction and the tip of the extending piece 12 comes into contact with the locking projection 26. Get on. At this time, since the extension piece 12 is allowed to bend by utilizing the gap S (see FIG. 4B), the engagement operation of the pair of members 10 and 20 becomes easy.

When the insertion further progresses while maintaining the bent state of the extending piece 12, the pair of holding portions 13 are press-fitted into the pair of both end portions 25 in the width direction of the through holes 23. When the insertion further progresses and the lower end edge of the locking hole 14 reaches the locking projection 26, the extension piece 12 elastically returns and the locking hole 14 is locked to the locking projection 26 (FIG. 4). See (b)). As a result, the engaging operation of the pair of members 10 and 20 is completed, and the assembly structure 30 of the pair of members 10 and 20 shown in FIG. 3B is obtained.

In the assembled structure 30, as shown in FIG. 4A, a pair of holding portions 13 are press-fitted into a pair of both end portions 25 in the width direction of the through holes 23. Therefore, the extension piece 12 is prevented from being displaced in the bending direction, and as a result, the locking hole 14 of one member 10 is prevented from being unintentionally disengaged from the locking projection 26 of the other member 20. obtain. Further, in the assembled structure 30, as shown in FIGS. 3B and 4, the lower end surface of the base portion 11 of one member 10 and the upper end surface of the upper plate portion 22 of the other member 20 are in contact with each other. .. Therefore, the vertical positional deviation of the extension piece 12 can be suppressed.

<Action / effect>
As described above, according to the assembly structure 30 according to the embodiment of the present invention, the pair of holding portions 13 provided on the side edges of the extension piece 12 in the width direction form a pair of through holes 23 in the bending direction of the extension piece 12. The pair of members 10 and 20 are engaged with each other in a state of being press-fitted into both end portions 25 in the width direction (a state of being sandwiched and in contact with the inner wall surfaces of both end portions 25 in the width direction). Therefore, it is possible to prevent the extension piece 12 from being displaced in the bending direction, and as a result, it is possible to prevent the locking hole 14 of one member 10 from being unintentionally disengaged from the locking projection 26 of the other member 20. .. Further, since the pair of holding portions 13 are provided on the side edges of the extension piece 12, the extension piece 12 is provided with a rib-shaped protrusion protruding in the bending direction as in the conventional case. The extension piece 12 (and thus the assembly structure 30) can be miniaturized in the bending direction of the 12. Furthermore, since the cross-sectional coefficient of the extension piece 12 is less likely to increase as compared with the conventional case, the extension direction (vertical direction) of the extension piece 12 required to secure the amount of deflection of the extension piece 12 that occurs during engagement. The length of can be shortened. Therefore, the extension piece 12 (and by extension, the assembly structure 30) can be miniaturized in the extension direction of the extension piece 12.

Further, according to the assembly structure 30, the pair of holding portions 13 are press-fitted into the pair of both end portions 25 in the width direction of the through holes 23. Therefore, as compared with the case where the pair of holding portions 13 are not press-fitted into the pair of both end portions 25 in the width direction of the through holes 23 (when they only come into contact with the inner wall surfaces of both end portions 25 in the width direction), the extension piece 12 Positional deviation in the bending direction can be further suppressed, and unintended release of assembly can be further suppressed.

Further, according to the assembly structure 30, the bending direction dimension of the width direction central portion 24 in the through hole 23 is larger than the bending direction dimension of the pair of width direction both end portions 25 in the through hole 23. Therefore, by press-fitting the pair of holding portions 13 at the pair of both end portions 25 in the width direction of the through hole 23, the positional deviation of the extension piece 12 in the bending direction is suppressed, and the central portion 24 in the width direction of the through hole 23 is suppressed. It is possible to provide a gap S (see FIG. 4B) between the extension piece 12 and the central portion 24 in the width direction. As a result, the gap S is used to allow the extension piece 12 to bend during engagement, so that the pair of members 10 and 20 can be easily engaged with each other.

<Other forms>
The present invention is not limited to each of the above embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, and the like. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

In the above embodiment, a pair of holding portions 13 are provided on both side edges in the width direction of the extension piece 12. On the other hand, the holding portion 13 may be provided only on one side edge of the extending piece 12 in the width direction.

Further, in the above embodiment, the pair of holding portions 13 are press-fitted into the pair of both end portions 25 in the width direction of the through holes 23. On the other hand, the pair of holding portions 13 may not be press-fitted into the pair of both end portions 25 in the width direction of the through holes 23 (the pair may only be in contact with the inner wall surface of both end portions 25 in the width direction).

Further, in the above embodiment, the bending direction dimension of the width direction central portion 24 in the through hole 23 is larger than the bending direction dimension of the pair of width direction both end portions 25 in the through hole 23 (see FIG. 3A). On the other hand, the bending direction dimension of the width direction central portion 24 in the through hole 23 may be equal to the bending direction dimension of the pair of width direction both end portions 25 in the through hole 23. In this case, when the pair of members 10 and 20 are engaged, the gap S (see FIG. 4B) may not be formed between the extension piece 12 and the central portion 24 in the width direction.

Further, in the above embodiment, as a "locking portion" of one member 10 to be locked to the locking projection 26 (locked portion) of the other member 20, the bending direction of the extension piece 12 at a predetermined position. A locking hole 14 penetrating the (see FIG. 3A) is adopted. On the other hand, as shown in FIG. 5, as a "locking portion" of one member 10, a locking projection 14 projecting from the tip end portion of the extending piece 12 toward the other side in the bending direction is adopted. May be good.

Here, the features of the embodiment of the pair of member assembly structure 30 according to the present invention described above are briefly summarized and listed below, respectively, in [1] to [4].
[1]
An assembly structure (30) for assembling a pair of members to each other.
One member (10) of the pair of the members
A cantilever-shaped extension piece (12), a locking portion (14) provided on the extension piece (12), and a fixed end of the extension piece (12) rather than the locking portion (14). It has a holding portion (13) provided on at least one side edge of the extending piece (12) on the side.
The other member (20) of the pair of the members
It has an inserted portion (24, 25) into which the extension piece (12) is inserted, and a locked portion (26) into which the locking portion (14) is locked.
The assembly structure (30) is
When the extension piece (12) is inserted into the inserted portion (24, 25), the holding portion (13) is included in the inserted portion (25) in the bending direction of the extension piece (12). The locking portion (14) is configured to be locked to the locked portion (26) while being sandwiched and held by the wall surface.
Assembling structure of a pair of members (30).
[2]
In the assembly structure (30) described in the above [1],
The inserted portion (24, 25) is
The distance between the inner wall surfaces in the bending direction at the position where the holding portion (13) is sandwiched and held is narrower than the distance between the inner walls in the bending direction at a place different from the holding portion.
Assembling structure of a pair of members (30).
[3]
In the assembly structure (30) according to the above [1] or the above [2].
The thickness of the holding portion (13) in the bending direction is equal to or less than the thickness of the extending piece (12) in the bending direction.
Assembling structure of a pair of members (30).
[4]
In the assembly structure (30) according to any one of the above [1] to [3].
The holding portion (13) is
It is press-fitted between the inner wall surfaces of the inserted portion (25).
Assembling structure of a pair of members (30).

10 One member 12 Extension piece 13 Holding part 14 Locking hole, locking protrusion (locking part)
20 The other member 23 Through hole (inserted part)
24 Central part in the width direction (the part to be inserted and the part to be held by sandwiching the holding part)
25 Both ends in the width direction (inserted part, different part)
26 Locking protrusion (locked part)
30 assembly structure

Claims (4)

It is an assembly structure for assembling a pair of members to each other.
One member of the pair of the members
A cantilever-shaped extension piece, a locking portion provided on the extension piece, and a fixed end side of the extension piece with respect to the locking portion provided on at least one side edge of the extension piece. Has a holding part, which is
The other member of the pair of the members
It has an inserted portion into which the extension piece is inserted and a locked portion into which the locking portion is locked.
The assembly structure is
When the extending piece is inserted into the inserted portion, the locking portion is held in a state where the holding portion is sandwiched and held by the inner wall surface of the inserted portion in the bending direction of the extended piece. It is configured to be locked to the locked portion.
Assembly structure of a pair of members. In the assembly structure according to claim 1,
The inserted portion is
The distance between the inner wall surfaces in the bending direction at the portion where the holding portion is sandwiched and held is narrower than the distance between the inner wall surfaces in the bending direction at a location different from the said location.
Assembly structure of a pair of members. In the assembly structure according to claim 1 or 2.
The thickness of the holding portion in the bending direction is equal to or less than the thickness of the extending piece in the bending direction.
Assembly structure of a pair of members. In the assembly structure according to any one of claims 1 to 3.
The holding part is
Press-fitted between the inner wall surfaces of the inserted portion,
Assembly structure of a pair of members.

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